weird internet problem in Kubuntu 6.06

[Joseph]

Hello Sinclair,

  We can help but need more information to do so.  How
are you connected to the Internet?  Are you behind a
router/firewall/proxy?  Did you check if name
resolution is work i.e. DNS with nslookup or dig?  Can
you get to your default gateway via ping or its
management interface?  Is your ISP experiencing
downtime?  I will stop now as I could go on for
days....

  Please note that ping is not the be and end all test
of connectivity and many devices filter ICMP packets
so they will infact be "up" but a ping will show them
as "down."

  Any other details will help us help you.. =)
Thanks,
Joe


Message: 8
Date: Mon, 25 Jun 2007 16:21:50 +0200
From: "O. Sinclair" <o.sinclair at gmail.com>
Subject: weird internet problem in Kubuntu 6.06
To: Kubuntu Help and User Discussions
<kubuntu-users at lists.ubuntu.com>
Message-ID: <467FCF7E.5050509 at gmail.com>
Content-Type: text/plain; charset=ISO-8859-1;
format=flowed

I have a user that has a desktop PC running Kubuntu
LTS. All of a
 sudden 
internet browsing and thinks like ping are not working
- but email
 does!!

I dont have a clue as to what might be suddenly wrong.
There is no 
firewall interface installed ala Guarddog installed on
this one. LAN 
browsing works.

HELP! any ideas appreciated,

Sinclair